Boring and drilling tool



(No Model.)

0. GROLL. BORING AND DRILLING TOOL.

No. 429,261. PatentedJun-e 3, 1890.

UNITED STATES PATENT FFICE CHARLES GROLL, OF UPPER LEHIGH, PENNSYLVANIA.

BORING AND DRILLING TOOL.

SPECIFICATION forming part of Letters Patent No. 429,261, dated June 3, 1890.

Application filed August 81, 1889. Serial No. 822,550. (No model.)

To 00% whom it may concern.-

Be it known that I, CHARLES CROLL, a citizen of the United States, residing at Upper Lehigh,in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Boring and Drilling Tools; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention has for its object to provide a construction in anger or drill handles where by they may be used in the same manner as the ordinary left and right hand handles and also as ratchet-handles; and it consists of a barrel having a slotted cylinder sliding there in, the said cylinder having two perforations at right angles with each other extending therethrough, and a ratchet-wheel, the squared perforation of which registers with one of the perforations in the cylinder contained in the slot thereof and being provided with a dog, whereby motion in one direction may be imparted to the wheel and to the tool carried in the perforation thereof. It also consists of elongated openings in the sides of the said barrel and of means whereby the cylinder is forced past the openings in the barrel unless restrained by the toolinserted therein,whereby the latter will be held in position; and it also consists of the construction, arrangement, and combination of the several parts, as will be hereinafter fully described and claimed;

Referring to the accompanying drawings, in which corresponding parts are designated by similar letters, Figure l is a longitudinal section of my invention adapted for use as a right or left hand handle. Fig. 2 is a longitudinal section, taken-at right angles to Fig. 1, showing my invention adapted for use as a ratchet-handle, and having a suitable jack mounted thereon for forcing the tool (in the drawings a drill) into the work. Fig. 3 is a side view of the barrel; and Fig. i is a side view of the cylinder, showing the relative position of the openings and perforations therein. Fig. 5 is an enlarged detail plan View of a part of the barrel, showing one of the openings therein; and Fig. 6 is a section on line a; .1: thereof, showing the manner of securing the tools innny invention when it is used as a right and left hand handle. Fig. 7'is an elevation showing the construction of the head of tools adapted to be used herewith.

The barrel A has a handle-piece A secured to one end thereof in any approved manner,

the opposite end of the barrel havinga female screw-thread a, into which the male screwthread a upon the detachable handle-piece A screws. The barrel A has four elongated openings a a and a a cut therein, each two of the openings being diametrically opposite each other, the one ends of the openings a a being rounded, the opposite ends being square, the said openings being at the middle and at the open end of the barrel A, respectively, the openings a having their rounded ends facing the closed end of the barrel A, or, which amounts to the same thing, the handle-piece A, while openings a have their rounded ends contiguous to the open end of the barrel or the handle-piece A A cylinder B slides within the barrel A and is pushed toward the open end thereof by a coiled spring 13, also contained therein. The cylinder Bis slotted, as at 1), near its outer rounded end b, and has a perforation 1) near its rear and in the same plane with the slot, while a perforation b is cut in the forward end of the cylinder, passing through slot 1) and at right angles therewith and with the perforation b in order that the perforations b and 5 respectively, may lie in the same planes with the openings (6 and a of the barrel, which are also at right angles with each other, so that by sliding the cylinder 13 in the barrel A the perforations b and holes a and the perforations b and holes a may be caused to register.

A ratchet-wheel C is carried in the slot 1) of the cylinder B, and projects slightly from either side thereof into the splineways a, cut in the interior of the barrel A, thus preventiug the rotation of the cylinder, which would cause the perforations b and b to lie in different planes from the openings a and a and thus prevent the insertion of the tool. The central squared perforation c of the ratchet wheel registers with the circular perforation b in the cylinder, while a click 0, pivoted within the slot 72 thereof, is held against the wheel by the spring 0 The form of the heads of the tools which are adapted to be used with my invention is shown in detail in Fig. 7, in which the tool I) has a reduced squared shank (Z, of a slightlysmaller size than the squared perforations b and c of the cylinder B and ratchet-wheel C, respectively, while a circular shank d, of the same diameter as the smaller diameter of the square shank d, is formed just below the same, forming shoulders (Z upon the four corners of the squared shaft (1, a similar circular shank (1 being formed above the square shank d. \Vhen a tool is to be inserted in the openings a and the handle is to be used as a right and left hand one, as is illustrated in Fig. 1, the detachable handle-piece A is slightly unscrewed, permitting the spring B to force the cylinder outward, when the squared perforation therein will register with the squared end of the openings a If the head of the tool is now inserted, its squared shank will pass through the square end of one of the openings and will rest within the square perforation b of the cylinder B, the rounded shanks (7/ thereon projecting into the openings a If the handle-piece A be now screwed back into its original position, the recessed face (0 thereof will bear upon the outer rounded end I) of the cylinder B, forcing it backward. The tool D will partake of this movement, eausingits rounded shanks d to slide in the openings a untilthe rounded end thereof is reached, when the shoulders (I upon the rear side of the tool will slide under the rounded ends of the openings (L as shown in Figs. 5 and 6, preventing the withdrawal of the tool. It will be seen that in this construction the tool is held in the center of the handle, the pieces A and A affording means whereby it may be rotated and the pressure necessary to cause it to bite may be applied.

When the handle is to be used as a ratchethandle, the piece A is removed,and as in its use for this purpose it is desirable to have means for forcing the tool into the work, causing it to bite, a collar E, carrying a projection c on one side and having a perforation e on the other, is slid over the end of the barrel A, the perforation e in the collar registerin with one of the openings a in the barrel. In this case, preparatory to inserting the tool, the cylinder 13 is pushed back, causing the squared perforation in the ratchet-wheel O to register with the squared ends of the open ings a in the barrel and the shank of the tool inserted, the squared portion of which will be engaged by the squared perforation c of the ratchet-wheel. The cylinder is then released, and the spring B, pushing it outward, will cause the shoulders (1 upon the tool to slide between the rounded forward edges of the opposite openings a, locking the tool in position, as has been described in reference to the openings a A screw 6 is mounted in the projection e of the collar E, forming a jack, which by bearing against a suitable brace, as is shown in dotted lines in Fig. 2, will afford a means for forcing the tool D into the work. It is evident that an oscillating motion of the handle-piece A will, by means of the click or dog 0, be changed into a rotary motion of the ratchet-wheel C, from which it will be imparted to the tool, as is well known.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a handle, the combination of a barrel having two elongated openings therein with rounded ends, the one of the said openings being diametrically opposite the other, a cylinder sliding in the said barrel and having a squared perforation therein, means for changing the position of the said cylinder, and a tool the head of which is a squared shank having a rounded shank of a diameter equal to the smaller diameter of the square shank above and below the same, the square shank being engaged by the square perforation in the cylinder, as described.

2. The combination of abarrel having han dle-pieces attached to its opposite ends, one of the said pieces being detachable, the said barrel having four elongated openings with rounded ends therein, forming two pairs of openings, the openings of each pair being diametrically opposite each other, a cylinder sliding in the said barrel having a squared perforation, and a ratchet wheel with a square perforation therein, means for changing the position of the said cylinder, and a tool having a squared shank on its head and having shoulders thereon, as described.

The combination, in a handle, of a barrel having two elongated openings with rounded ends therein, the one of the said openings being diametrically opposite the other, a cylinder sliding in the said barrel and having a perforation therein, and means for moving the said barrel, as described.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES CROLL. lVitnesses:

PHILIP V. WEAVER, FRANK NEEDHAM. 

